– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 43mm), heaviest during Fri morning. Very mild (max 16°C on Thu afternoon, min 7°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 26mm), heaviest during Tue afternoon. Very mild (max 14°C on Sun afternoon, min 7°C on Tue night). Wind will be generally light. | ||||||||||||||||
Thu 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  |  | |  |  | |  | | | | |
light rain | heavy rain | rain shwrs | mod. rain | rain shwrs | rain shwrs | rain shwrs | cloudy | clear | clear | some clouds | some clouds | some clouds | light rain | mod. rain | rain shwrs | light rain | |
Cloud base (m) | 3050 | 550 | 600 | 650 | 600 | 800 | 1650 | 6450 | 4600 | 6500 | 2250 | 750 | 550 | 550 | 600 | ||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 12 | 12 | 9 | 9 | 0.3 | 0.1 | — | — | — | — | — | — | 1.4 | 8 | 12 | 4 |
max °C | 16 | 13 | 12 | 11 | 8 | 9 | 12 | 9 | 12 | 14 | 10 | 12 | 13 | 11 | 10 | 10 | 8 |
min °C | 14 | 11 | 11 | 8 | 7 | 7 | 12 | 8 | 8 | 14 | 8 | 8 | 13 | 10 | 10 | 9 | 7 |
chill °C | 14 | 10 | 10 | 6 | 6 | 7 | 12 | 8 | 8 | 14 | 8 | 8 | 13 | 8 | 8 | 7 | 6 |
Freezing level m | 2850 | 2600 | 2300 | 1800 | 1650 | 1600 | 2150 | 2350 | 2450 | 2550 | 2500 | 2350 | 2450 | 3000 | 2950 | 1950 | 1700 |
 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — |
 | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 43mm), heaviest during Fri morning. Very mild (max 16°C on Thu afternoon, min 7°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 26mm), heaviest during Tue afternoon. Very mild (max 14°C on Sun afternoon, min 7°C on Tue night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP7946 | |||||
 | |||||
Bellingham Airport |  | ||||
SHIP9873 | |||||
SHIP7451 | |||||
SHIP2863 | |||||
SHIP3427 | |||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.